We have three regions in our Exchange 2007 environment - EMEA, APAC, and AMERCAS (AMER).
Our OAB server, the one where it's actually generated, is NY-EXCH1.
Each region then has three CAS servers for OAB distribution to clients - AMER-CAS1, AMER-CAS2, AMER-CAS3 in the case of the States.
Let's say I have a client in NY that doesn't seem to be downloading the latest OAB. How is it possible to find out which CAS server the client is attempting to download the OAB from? From what I can see, the \OAB\<GUID> folder on all the AMER CAS servers is up to date, it's just that the clients don't seem to be download the latest one looking at the OAB file dates on the client.